ELECTROCHEMISTRY MCQ
Authored by T PREMKUMAR
Science
12th Grade
Used 19+ times
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20 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
The standard reduction potential of metals A,B,C and D are -0.40v, +0.34v,+0.8v and -1.67v. The metal that can displace all others is
D
B
A
C
2.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
When tin is over iron, it acts as an oxidizing agent and protects iron.
TRUE
FALSE
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
The equilibrium constants of two redox reactions X and Y are 1.5 x1015 and 5.5 x 1016 . Reaction X is more spontaneous than Y.
FALSE
TRUE
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Cu∣Cu2+∥Fe2+,Fe3+∣Pt In this cell
Copper ion is the oxidizing agent
Copper is the oxidizing agent
Fe3+ is the oxidizing agent
Fe2+ is the oxidizing agent
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
When KMnO4 acts as an oxidizing agent and ultimately forms MnO42–, MnO2, Mn2O3 and Mn2+, then the number of electrons transferred in each case is
3,4,1,5
1,3,4,5
5,4,3,1
4,5,31
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Given: (i) Cu2+ + 2e- → Cu, Eo = 0.337 V
(ii) Cu2+ + e- → Cu+, Eo = 0.153 V
Electrode potential E° for the reaction Cu+ + e– → Cu will be
0.284v
0.530v
0.184v
0.380v
7.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
The standard reduction potential value of the three metallic cations X, Y and Z are 0.52, -3.03 and -1.18 V respectively. the order of reducing power of the corresponding metals is
Y>X>Z
X>Y>Z
X>Z>Y
Y>Z>X
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